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* Replace multi-role checks with action pluginRodolfo Carvalho2017-02-101-41/+0
| | | | | | | | | | | | | | | | | | This approach should make it easier to add new checks without having to write lots of YAML and doing things against Ansible (e.g. ignore_errors). A single action plugin determines what checks to run per each host, including arguments to the check. A check is implemented as a class with a run method, with the same signature as an action plugin and module, and is normally backed by a regular Ansible module. Each check is implemented as a separate Python file. This allows whoever adds a new check to focus solely in a single Python module, and potentially an Ansible module within library/ too. All checks are automatically loaded, and only active checks that are requested by the playbook get executed.
* Reduce code duplication using variableRodolfo Carvalho2017-01-121-22/+7
| | | | | We can use openshift_facts's service_type to determine the package names.
* Replace custom variables with openshift_factsRodolfo Carvalho2017-01-121-2/+1
| | | | | | | Note: on a simple example run of ansible-playbook against a single docker-based host, I saw the execution time jump from 7s to 17s. That's unfortunate, but it is probably better to reuse openshift_facts, than to come up with new variables.
* Refactor preflight check into rolesRodolfo Carvalho2017-01-121-0/+57